Video - Katy Perry, Gerard Butler And Jon Bon Jovi Are Guests At The White House Correspondents' Dinner - Part 4

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Pop superstar Katy Perry was one of the biggest international stars to hit the annual White House Correspondents' Association Dinner at the Washington Hilton in a lush green gown. Other famous faces included journalist Pierce Morgan, '300' star Gerard Butler and rocker Jon Bon Jovi with his wife Dorothea.

'Game of Thrones' star Natalie Dormer was joined by her co-star Nikolaj Coster-Waldau on the red carpet, while 'CBS This Morning' anchor Gaye King was also spotted with her daughter Kirby Bumpus. Other arrivals were 'A Perfect Getaway' actor Steve Zahn, 'Lost' star Daniel Dae Kim, Kate Walsh from 'Grey's Anatomy', 'Downton Abbey' actress Michelle Dockery and 'Seinfeld' star Julia Louis Dreyfus.